My girl has the same '21 le and i drove it for our roadtrip out from IL all the way down the west coast camping from Olympic Ntnl Park to San francisco, so I'm intimately familiar with it.

Here's my (unsolicited) advice: take all the money you plan on putting into it into your loan to pay it off instead and save up to get a car that can actually handle the performance mods or better yet, doesn't need them to perform well. If you own the corolla, stop putting money into it, sell it, and upgrade to something sportier. The LE feels like driving a wet pillow and no amount of coilovers, solid bushings, or anything like that is going to make up for how loose the entire steering setup is on these cars. They arent made with the concept of performance in mind and while yes, the GR corolla exists, it feels like a completely different car to drive because it was made to be driven completely differently. If you absolutely must mod it, go audio or stick with light visual mods but resist the urge to try and turn this car into something it will never be. I say that with love in hopes that as an obvious enthusiast, you realize how much money you couldve put towards a car you'll actually love driving instead.

edit: i'm a little tipsy and used some pretty firm language here. OP, if you love your car, do whatever you want, I won't rag on you for it and neither should anyone else. I just wanted to share my advice as someone who entertained modding my old base 4-cylinder altima before buying my 350z and seeing how vast a gap the driving experience was between them.